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LEARN ABOUT CENTOS

ipsec_tncfg

IPSEC_TNCFG(5)							  [FIXME: manual]						    IPSEC_TNCFG(5)

NAME

       ipsec_tncfg - lists IPSEC virtual interfaces attached to real interfaces

SYNOPSIS

       ipsec tncfg
	     cat/proc/net/ipsec_tncfg

OBSOLETE

       Note that tncfg is only supported on the classic KLIPS stack. It is not supported on any other stack and will be completely removed in
       future versions. A replacement command still needs to be designed

DESCRIPTION

       /proc/net/ipsec_tncfg is a read-only file which lists which IPSEC virtual interfaces are attached to which real interfaces, through which
       packets will be forwarded once processed by IPSEC.

       Each line lists one ipsec I/F. A table entry consists of:

       +
	   an ipsec virtual I/F name

       +
	   a visual and machine parsable separator '->', separating the virtual I/F and the physical I/F,

       +
	   a physical I/F name, to which the ipsec virtual I/F is attached or NULL if it is not attached,

       +
	   the keyword mtu=,

       +
	   the MTU of the ipsec virtual I/F,

       +
	   the automatically adjusted effective MTU for PMTU discovery, in brackets,

       +
	   a visual and machine parsable separator '->', separating the virtual I/F MTU and the physical I/F MTU,

       +
	   the MTU of the attached physical I/F.

EXAMPLES

       ipsec2 -> eth3 mtu=16260(1443) -> 1500

       shows that virtual device ipsec2 with an MTU of 16260 is connected to physical device eth3 with an MTU of 1500 and that the effective MTU
       as a result of PMTU discovery has been automatically set to 1443.

       ipsec0 -> wvlan0 mtu=1400(16260) -> 1500

       shows that virtual device ipsec0 with an MTU of 1400 is connected to physical device wvlan0 with an MTU of 1500 and no PMTU packets have
       gotten far enough to bump down the effective MTU from its default of 16260.

       ipsec3 -> NULL mtu=0(0) -> 0

       shows that virtual device ipsec3 is not connected to any physical device.

FILES

       /proc/net/ipsec_tncfg, /usr/local/bin/ipsec

SEE ALSO

       ipsec(8), ipsec_manual(8), ipsec_eroute(5), ipsec_spi(5), ipsec_spigrp(5), ipsec_klipsdebug(5), ipsec_tncfg(8), ipsec_version(5),
       ipsec_pf_key(5)

HISTORY

       Written for the Linux FreeS/WAN project <http://www.freeswan.org/> by Richard Guy Briggs.

[FIXME: source] 						    10/06/2010							    IPSEC_TNCFG(5)

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